Refractory material produced from red mud

Details Refractory material produced from red mud Refractory material produced from red mud

1991-01-02

1992-04-21

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Composed of waste material

501127, 501128, 106600, 264 66, C04B 3510

Patent

active

051067978

ABSTRACT:
A process for producing a refractory material and to the material so-produced. The process comprises calcining red mud obtained as a by-product of the Bayer process of producing alumina, grinding the calcined product to form particles of -4 Tyler mesh, mixing the ground product with a binder (e.g. colloidal silica, colloidal alumina, sodium silicate or sodium aluminate) and sufficient water to produce a formable mixture. The mixture is then formed into a desired shape and fired, preferably after curing and drying. The resulting fired products have good resistance to high temperatures and to corrosive chemicals such as cryolite. Consequently, the products can be used as refractory linings for aluminium production cells, and in similar applications.

REFERENCES:
patent: 3879211 (1975-04-01), Klotz
patent: 3886245 (1975-05-01), Bayer et al.
patent: 3985567 (1976-10-01), Iwu
patent: 4368273 (1983-01-01), Puskas

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